A frontal system north of Lake Okeechobee focused moisture and wind convergence across SE Florida, leading to the developing of showers and strong thunderstorms during the afternoon hours.
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The episode as NWS MFL wrote it up.
A frontal system north of Lake Okeechobee focused moisture and wind convergence across SE Florida, leading to the developing of showers and strong thunderstorms during the afternoon hours.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Miami, FL wrote its last area forecast discussion before the first event at Apr 28, 11:49 AM EST, 1 hour 11 minutes earlier.
Area Forecast Discussion National Weather Service Miami FL 1249 PM EDT Thu Apr 28 2022 .AVIATION(18Z TAFS)... VCSH at all east coast terminals through most of the period with thunder possible this afternoon and potentially Friday afternoon as well, though will wait for more confirmation to include VCTS in the TAFs for Friday. VFR prevails with lower ceilings possible in passing showers and storms through the period. Likely seabreeze development at APF this afternoon with westerly winds and southeasterly to easterly winds at all other sites. Light and variable winds tonight strengthening and becoming easterly by Friday morning. && .PREV DISCUSSION... (Issued 959 AM EDT Thu Apr 28 2022) UPDATE... Forecast remains on track this morning with numerous showers and thunderstorms possible across South Florida this afternoon.The area continues to moisten with southerly flow which will turn more southeasterly this afternoon. While the 12Z MFL sounding indicates PWATS of 1.12 inches (which isn't extraordinary for this time of year), the weak low level flow today means shower activity could be relatively slow moving. Training showers or thunderstorms over the eastern metro areas could create a concern for localized urban flooding this afternoon and evening. No significant forecast changes were made with the morning update. PREV DISCUSSION... (Issued 740 AM EDT Thu Apr 28 2022) AVIATION(12Z TAFS)... Prevailing VFR through the period at all sites but lower ceilings are possible in passing convection this afternoon. Showers possible at all sites beginning early this afternoon with thunderstorms possible beginning at 18Z for northeastern sites PBI/FXE/FLL, eventually progressing southward over the hour to the southeastern terminals MIA/OPF/TMB. Thunder potential diminishes this evening by 00Z and main convection likely remaining will be showers. Weak southerly flow will be increasing and turning more easterly through the end of the period. PREV DISCUSSION... (Issued 315 AM EDT Thu Apr 28 2022) SHORT TERM (Through Friday)... A weak southern stream wave will pass overhead today around the base of the departing eastern CONUS trough. At the surface, a frontal boundary will near south Florida, but likely remain just north of the Lake Okechobee region. Weak low-level flow should allow convection to develop along each coast's seabreeze as they gradually move inland. Complicating factors to that will be that storms are likely to form along the frontal boundary to our north and drop generally SSW into south Florida. As outflow from these storms propagates south along the seabreezes, new storms will develop and slowly move ESErly as the deeper layer flow regime will generally be out of the northwest. This will result in a more progressive Gulf Coast breeze but will likely mean storms moving back ESE over the east coast metro towards areas that received rain earlier in the afternoon. Areas that receive multiple rounds of rain could experience localized flooding in sensitive locations. Starting tonight, low-level east/southeast flow will become established as the diffuse frontal boundary lays out northwest to southeast along the base of the southward building ridge. This will focus moisture convergence along the southeast coast of Florida underneath divergent flow aloft where the northern and southern stream merge back together over the western Atlantic. It appears that on Friday, flow will be easterly enough to warrant a heavy rain potential from multiple rounds of storms down the entire east coast. The storm development will initially be along the east coast, spreading across the state and interacting with the Gulf Coast breeze later in the day. However, continued storm development is expected along the east coast even after the passage of the seabreeze. While common rainfall amounts through the period should be on the order of 1-3", CAM ensembles raw output and LPMM fields suggest the potential for isolated 5-7" amounts. LONG TERM (Friday Night through Wednesday)... The convergent southeasterly low-level flow regime, with divergent flow aloft that was discussed above is expected to continue through the weekend. However, the divergent flow aloft will gradually weaken and flow will veer more southeasterly. This will generally result in a lower heavy rain potential later in the weekend, with more of a focus towards the Treasure Coast. That said, a large portion of southeast Florida could pick up another 1-3" (with isolated higher amounts) over the weekend. As ridging builds in aloft early next week, a more typical seabreeze pattern can be expected, with highs warming back into the upper 80s. AVIATION(06Z TAFS)... VFR conditions will continue through the early morning hours across the TAF sites. Weaker SE winds should allow for sea-breeze development along the coast, and showers/thunderstorms may develop by this afternoon (mainly around 16-20Z). Brief bouts of IFR and even LIFR will be possible, and may require TEMPO groups as needed. Convection should cease around 00-02Z with winds becoming light/variable around this timeframe as well. MARINE... Light and variable winds today will become easterly by tonight and increase to around 15 to 20 knots late on Friday. ESE flow around this magnitude will continue into mid-week next week. A 2-4 ft NE swell is forecast to spill southward down to the Palm Beach county area tonight through Friday night which may bump seas up to Advisory levels as it interacts with the elevated winds and Gulf Stream. Advisory conditions should then subside mid to late weekend. BEACHES... A moderate risk of rip currents is forecast along Palm Beaches today due to the heightened swell. As winds and swell increase tomorrow, a high risk will be likely and the high risk should expand down the entire east coast for the weekend and into next week. && .PRELIMINARY POINT TEMPS/POPS... Miami 72 82 72 82 / 40 60 50 60 West Kendall 69 83 69 83 / 40 60 50 60 Opa-Locka 70 82 70 82 / 50 70 50 60 Homestead 69 81 70 82 / 40 50 50 50 Fort Lauderdale 72 80 71 81 / 50 70 50 60 N Ft Lauderdale 72 79 71 80 / 50 70 50 60 Pembroke Pines 70 81 69 82 / 50 70 50 60 West Palm Beach 69 78 69 79 / 60 60 40 60 Boca Raton 71 81 70 81 / 60 70 50 60 Naples 69 86 69 86 / 20 50 30 50 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...High Rip Current Risk through Friday morning for FLZ168. AM...None. GM...None. && Update/Aviation...Rizzuto Today through Friday and Marine...99 Friday Night through Wednesday...99 Visit us at weather.gov/miami Follow us on Facebook and Twitter at: www.facebook.com/nwsmiami www.twitter.com/nwsmiami
Hazardous Weather Outlook for South Florida...UPDATED National Weather Service Miami FL 124 PM EDT Thu Apr 28 2022 AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676- 291130- Lake Okeechobee-Biscayne Bay- Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM- Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM- Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM- Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM excluding the territorial waters of Bahamas-Glades-Hendry- Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier- Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade- Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami- Dade-Far South Miami-Dade- Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM- Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM- Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM- 124 PM EDT Thu Apr 28 2022 ...Strong Afternoon/Evening Storms with Localized Flooding Possible... ...Palm Beaches: High Rip Current Risk Today... This hazardous weather outlook is for South Florida. .DAY ONE...THIS AFTERNOON AND TONIGHT Rip currents: There is a high risk of rip currents along the Palm Beaches and a moderate risk for Broward beaches. Thunderstorms: Scattered to numerous storms are expected across all of South Florida this afternoon through the evening. The strongest storms may be capable of producing isolated damaging wind gusts, small hail, and funnel clouds. Storms may linger in a more isolated nature along the east coast overnight. Flooding: Areas along the east coast metro that receive multiple rounds of rain have the potential to experience localized flooding of poor drainage areas. Marine: Seas will continue increasing through today. By tonight, Advisory level seas are possible for waters adjacent to Palm Beach county. Waterspouts: There is a limited chance for waterspouts today across the Atlantic, Gulf and Okeechobee waters today. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Showers and storms will remain quite numerous through the weekend. The threat for localized flooding will continue through at least Saturday. A high risk for rip currents is expected along the entire east coast by this weekend along with cautionary level winds and seas into next week. .SPOTTER INFORMATION STATEMENT... Widespread spotter activation is not anticipated, however individual spotters are encouraged to report high wind, hail and flooding to the National Weather Service forecast office in Miami. For more information...visit the National Weather Service in Miami website at www.weather.gov/miami. RAG
The Miami radar (KAMX), 129 km away, was scanning. The volume nearest the first event began at 18:00 UTC.
2 thunderstorm wind, 1 funnel cloud. Local standard time, as filed.
A trained spotter reported a funnel cloud near Lake Magnolia/Clear Lake Road in West Palm Beach.
Video and pictures were received of damage to an outdoor bar of a restaurant on the Intracoastal Waterway in Lantana. A small flag pole was broken in half, and a tiki roof was blown off.
A thunderstorm wind gust produced tree damage and damaged screen patios in a Margate neighborhood northwest of HCA Florida Northwest Hospital. Time is estimated via radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2022Every state in 2022This day in weather historyWarnings in Florida, April 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1023130, 1023144, 1023141.